title: Synthesis and Characterization of Mn-Doped ZnO Nanocrystals.
abstract: We report the synthesis and characterization of several sizes of Mn-doped ZnO nanocrystals, both in the free-standing and the capped particle forms. The sizes of these nanocrystals could be controlled by capping them with polyvinylpyrollidone under different synthesis conditions and were estimated by X-ray diffraction and transmission electron microscopy. The absorption properties of PVP-capped Mn-doped ZnO exhibit an interesting variation of the band gap with the concentration of Mn. Fluorescence emission, electron paramagnetic resonance, and X-ray absorption spectroscopy provide evidence for the presence of Mn in the interior as well as on the surface of the nanocrystals.
authors.affiliation: Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore-560012, India, and Institute of Physics, Sachivalaya Marg, Bhubaneshwar-751005, India.
authors.forename: Ranjani
authors.initials: R
authors.lastname: Viswanatha
authors.forename: Sameer
authors.initials: S
authors.lastname: Sapra
authors.forename: Subhra Sen
authors.initials: SS
authors.lastname: Gupta
authors.forename: B
authors.initials: B
authors.lastname: Satpati
authors.forename: P V
authors.initials: PV
authors.lastname: Satyam
authors.forename: B N
authors.initials: BN
authors.lastname: Dev
authors.forename: D D
authors.initials: DD
authors.lastname: Sarma